复杂内筒的超声波液量检测仪设计  

Design of Ultrasonic Measurement System for Complex Inner Drum Liquid Level

作　　者：李勇[1] 何耀欣[2] 李刚[2] 

机构地区：[1]河南质量工程职业学院,河南平顶山467000 [2]军械工程学院火炮工程系,河北石家庄050003

出　　处：《仪表技术与传感器》2016年第9期33-36,共4页Instrument Technique and Sensor

基　　金：河南省科技计划资助项目(132102310495)

摘　　要：为准确方便快速地测量复杂内筒的液位,设计了超声波液量检测仪。对比采用灵敏度较高的复合压电陶瓷探头,可明显地测出气液回波差异。实验结果表明：100μm后气液的回波包络差别最大,可用来进行气液界面的分辨。以某型复进机为例,验证了复进机倾斜角度在0~30°之间时检测仪测量精度的稳定性。测试结果显示液位高度误差小于1.4 cm,容量误差小于0.15 cm,实装测试表明测试值与实际值具有良好的一致性。In order to measure the liquid level of complex inner drum, an ultrasonic measurement system was designed based on principle of ultrasonic liquid level detection. Composite piezoelectric ceramic probe was adopted. The probe can detect difference of the two echo singles.Experiment resuhs indicate that the difference between echo signal of air and that of liquid after 100 μm is maximum.Measurement accuracy of the ultrasonic measurement system is tested when tilt angle of counterrecoil is less than 30° .The height error of liquid level is less than 1.4 cm and correspondingly volume errnr is less than 0.15 cm.Live-fire test indicates that test value and actual value have good conformity.

关 键 词：超声波 复杂内筒 液位测量 自动测试 复合压电陶瓷 特征优化 

分 类 号：TB517[理学—物理]